Ngk Insulators, Inc.

Haruo Otsuka

Yoshio Kikuchi

Yuki Fujita

Takahiro Tomita

Naohito Yamada

Nobuyuki Kobayashi

Kazuhiro Yamamoto

Chiori Suzuki

Provided is a lithium secondary battery including: a positive electrode plate which is a lithium complex oxide sintered plate; a negative electrode layer; a separator; an electrolytic solution; and a pair of exterior films having outer peripheral edges sealed with each other to form an internal space that accommodates the battery elements, wherein the portions of the negative electrode layer and the separator corresponding to the outer extension of the battery is deviated toward the positive electrode plate side from the portions of the negative electrode layer and the separator corresponding to the body of the battery.

Lithium rechargeable battery and card with built-in battery

Provided is a lithium secondary battery including: a positive electrode plate being a lithium complex oxide sintered plate; a negative electrode layer; a separator; a positive electrode current collector foil; a negative electrode current collector foil; an electrolytic solution; a pair of exterior films having outer peripheral edges sealed with each other to form an internal space that accommodates the battery elements; a positive electrode tab terminal; and a negative electrode tab terminal, wherein the inner peripheral edge of the sealed part of the exterior films and the outer peripheral edge of the positive electrode plate are apart from each other at a distance Wof 2.0 to 4.0 mm on the side on which the positive electrode tab terminal is sealed, and the electrolytic solution has a volume of 1.05 to 1.25 times the total void volume of the positive electrode plate, the separator, and the negative electrode layer.

Lithium secondary battery and card with built-in battery

The zeolite structure is a porous zeolite structure constituted of a formed article obtained by extruding a zeolite raw material containing zeolite particles and an inorganic binding material including at least basic aluminum chloride, a ratio P(P=V/V&#xd7;100) of a volume Vof the inorganic binding material in the zeolite structure with respect to a volume Vof the zeolite structure is from 10 to 50 vol %, and a relation of equation (1) is satisfied:P2/P1&#x2266;1.0&#x2003;&#x2003;(1),in which Pis the ratio of the volume Vof the inorganic binding material in the zeolite structure with respect to the volume Vof the zeolite structure and P(P=Vb/Va&#xd7;100) is a ratio of volumes Vb of pores having pore diameters of 0.003 to 0.03 &#x3bc;m with respect to the whole pore volume Va of the zeolite structure.

Zeolite structure and manufacturing method thereof

Provide is a zinc secondary battery capable of preventing a short circuit between the positive and negative electrodes caused by zinc dendrites. The zinc secondary battery of the present invention comprises a positive electrode; a negative electrode containing zinc; an electrolytic solution in which the positive electrode and the negative electrode are immersed or with which the positive electrode and the negative electrode are in contact, wherein the electrolytic solution is an aqueous solution containing an alkali metal hydroxide; and a separator being placed between the positive electrode and the negative electrode and separating the positive electrode and the negative electrode from each other, wherein the separator comprises an inorganic solid electrolyte body having hydroxide ion conductivity.

Zinc secondary battery

A formed zeolite honeycomb article comprises a formed article obtained by extruding a zeolite raw material containing zeolite particles, an inorganic binding material and a filler constituted of plate-like particles in a honeycomb shape including partition walls disposed to form a plurality of cells, a drying shrinkage of the partition walls in a thickness direction thereof is larger than a drying shrinkage of the partition walls in a cell extending direction thereof and a drying shrinkage of the partition walls in a diametric direction perpendicular to the cell extending direction thereof, and the drying shrinkage of the partition walls in the thickness direction thereof is 1.2 or more times the drying shrinkage of the partition walls in the diametric direction perpendicular to the cell extending direction thereof in the formed zeolite honeycomb article.

Formed zeolite honeycomb article and fired zeolite honeycomb article

The manufacturing method includes a mixing step of mixing a plurality of zeolite particles, an inorganic binding material and an organic binder, to prepare a zeolite raw material, a forming step of extruding the zeolite raw material to obtain a formed zeolite article, and a firing step of firing the formed zeolite article to prepare the zeolite structure. The mixing step includes an inorganic binding material containing at least one type of silica sol selected from the group consisting of acid silica sol, silica sol containing silica particles coated with alumina, cationic silica sol, silica sol containing string-like silica particles, and silica sol containing bead-like silica particles. A content ratio of silica particles contained in the silica sol selected from the group is from 10 to 30 mass% with respect to 100 mass% of the zeolite particles.

Manufacturing method of zeolite structure

The zeolite structure includes a zeolite material containing a plurality of zeolite particles and an inorganic binding material which binds the zeolite particles to one another, the plurality of zeolite particles include fine zeolite particles having a small average particle diameter and coarse zeolite particles which have an average particle diameter of three or more times the average particle diameter of the fine zeolite particles and which are not an agglomerated material of primary particles, a ratio of volumes of the coarse zeolite particles with respect to the whole volume of the plurality of zeolite particles is from 40 to 90 vol %, in the zeolite material, a ratio of a volume of the inorganic binding material is from 5 to 50 vol %, and a zeolite raw material containing the plurality of zeolite particles and the inorganic binding material is extruded to form a zeolite structure.

The zeolite structure is a porous zeolite structure constituted of a formed article obtained by extruding a zeolite raw material containing zeolite particles and an inorganic binding material including at least basic aluminum chloride, a ratio P(P=V/V&#xd7;100) of a volume Vof the inorganic binding material in the zeolite structure with respect to a volume Vof the zeolite structure is from 10 to 50 vol %, and a relation of equation (1) is satisfied:2/1&#x2266;1.0&#x2003;&#x2003;(1),in which Pis the ratio of the volume Vof the inorganic binding material in the zeolite structure with respect to the volume Vof the zeolite structure and P(P=Vb/Va&#xd7;100) is a ratio of volumes Vb of pores having pore diameters of 0.003 to 0.03 &#x3bc;m with respect to the whole pore volume Va of the zeolite structure.

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Ichinomiya, Japan

Haruo Otsuka